Chemistry Final Part 1

The most characteristic property of the noble gassese is that they

The distance between two successive peaks on adjacent waves is its

Mendeleev predicted that the spaces in his periodic table represented

The set of orbitals that are dumbbell shaped and directed along the x,y, and z axes are called

Molar mass

which of the following statements is true according to modern atomic theory?

The wave model of light does not explain

If a mixture is not uniform in composition, it is said to be

An electron for which n = 1 more _____ than an electron for which n = 2

which of the following is an intensive property of matter

Isotopes are atoms of the same element that have different

Which of the following is not a physical change?

The element with electron configuration 1s² 2s² 2p⁶ 3s² 3p² is

if electrons in atom have the lowest possible energies, the atom is in the

The discovery of what elements added a new column to Mendeleev’s periodic table?

the two most important properties of all matter are

An orbital that can ever exist according to the quantum description of the atom is

For an electron in an atom to change from the ground state to an excited state

Basic research is usually performed

The major difference between a 1s orbital and a 2s orbital is that

whose series of experiments identified the nucleus of the atom

All isotopes of hydrogen contain

if repeated measurements agree closely but differ widely from the accepted value, these measurements are

How many orientations can an s orbital have about the nucleus

The atomic theory proposed by Dalton has been

an atom is electrically neutral because

The two electrons in the 1s orbital must have different spin quantum numbers to satisfy

experiments with cathode rays led to the discovery of the

Oxygen can merge with Carbon to form two compounds, CO and CO2. The ratio of the masses of oxygen that combine wit

a compound is

The SI base units for length and time are

A nuclear particle that has about the same mass as a proton, but with no electrical charge, is called a(n)

The nucleus of an atom has all of the following characteristics except that it

Mendeleev didn't list elements in his periodic table in order of increasing atomic mass; he grouped together similar

When an electron is acquired by a neutral atom, the energy is called

A three-dimensional region around a nucleus where an electron may be found is called a(n)

A state of matter in which a material has no definite shape but has a definite volume is the ____ state

According to the law of definite proportions, any two samples of KCl have

A physical change occurs when a

A horizontal row of blocks in the periodic table is called a(n)

the number of significant figures in the measurement 0.000

the vertical column on the periodic table are called

The frequency of electromagnetic radiation is measured in waves/second, or

A measurement that closely agrees with an accepted value is best described as

A volume of 1 millimeter is equivalent to

If 4.0g of element A combines with 10. G of element B, then 12 g of element A combined with ____ g of element B

Biochemistry is the study of

The number of orbitals for d sub level is

A solid substance is

According to the Borh model of the atom, the single electron of a hydrogen atom circles the nucleus

the first four sublevels with the maximum number of electrons that can be accommodated in each sublevel are

The Aufbau principle states that an electron

The total number of protons and neutrons in the nucleus of an atom is its

If a mixture is uniform in composition, it is said to be

A line spectrum is produced when a n electron moves from one energy level

Each atomic orbital is described by its principle quantum number followed by the

How many isotopes of hydrogen are known?

The number of atoms in 1 mole of carbon is

As the mass number of an element's isotopes of an element increases, the number of protons

The change of an atom from an excited state to the ground state always requires

An aluminum isotope consists of 13 protons, 13 electrons, and 14 neutrons. Its mass number is

The mass of 1 mol of chromium (atomic mass 51.996 amu) is

Argon, Krypton, and xenon are

a true statement about mass is that

The electrons available to be lost, gained, or shared when atoms form compounds are called

Which rule requires that each of the p orbitals at a particular energy level receive one electron before having 2

A chemical can be defined as

Inorganic chemistry is the study of

Visible light, X rays, infrared radiation, and radio waves all have the same

The group of soft, silvery, reactive metals, all of which have one electron in an s orbital, is known as the

The number of sublevels within each energy level of an atom is equal to the value of the magnetic quantum number

The statement that an electron occupies the lowest available energy orbital is

The metric unit for length that is closest to the diameter of a pencil is the

Rutherford's experiments led him to conclude that atoms contain massive central regions that

D has 3 mass units and each atom of element E has 5 mass units, a molecule composed of one atom each of D and E has

a spherical electron cloud surrounding an atomic nucleus would best represent

The region outside the nucleus where an electron can most probably be found is the

Nobel glasses are in group 18 and are best known because they are

The density of aluminum is 2.70 g/cm^3. What is the mass of a solid piece of aluminum with a volume of 1.50 cm^3

Matter includes all of the following except

the atomic number of oxygen, 8, indicates that there are eight

the liquid state of matter can be described as

According law of conservation, when Na, H, and O react to form a compound, the mass of the compound is _ sum of ind mass

A chemical change occurs when

The principles of atomic theory recognized today were conceived by

Applied research is carried out in order to

the quantity of matter per unit volume is

Elements in a group or column in the periodic table can be expected to have similar

The quantum number that indicates the position of an orbital about the three axes in space is the

Both the Heiseberg uncertainty principle and the Schrödinger wave equation

A quantum of electromagnetic energy is called a(n)

Which of the following is not a chemical change

The product of the frequency and the wavelength of a wave equals the

Chlorine has atomic number 17 and mass number 35. It has

a mixture is

organic chemistry is the study of

The horizontal rows on the periodic table are called

A measure of the quantity of matter is

which of the following is an extensive property of matter

The Liter is defined as